File: want_zlib.m4

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dovecot 1%3A2.3.19.1%2Bdfsg1-2.1%2Bdeb12u1
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AC_DEFUN([DOVECOT_WANT_ZLIB], [
  if test "$want_zlib" != "no"; then
    AC_CHECK_HEADER(zlib.h, [
      have_zlib=yes
      have_compress_lib=yes
      AC_DEFINE(HAVE_ZLIB,, [Define if you have zlib library])
      COMPRESS_LIBS="$COMPRESS_LIBS -lz"
    ], [
      if test "$want_zlib" = "yes"; then
        AC_ERROR([Can't build with zlib support: zlib.h not found])
      fi
    ])
  fi
])